SSBB dvd-5 or dvd-9???

I have read many and many posts from here......but still have a question about which SSBB to get and burn I have the Wii NTSC softmodded I do have verbatim dvd-r dvd5's and dvd9's I just want to know which works the best (with the least problems) I will download the NTSC version of the game, and I have imgburn I just need to know which one to get....can someone just answer this question for me....thanks in advance.